Petrels & Shearwaters in Mayo
Our list for Mayo has 5 petrels & shearwaters recorded regularly there: 2 summer visitors, 2 passage migrants and 1 scarce visitor
Most likely in October
GBIF · OctShare of all bird records in Mayo in October, 2019–2024. Each month links to that month’s page.
All 5, most common first
FulmarFulmarus glacialisSummer visitorCommon45–50 cmRegularly Feb–Sep
Manx ShearwaterPuffinus puffinusSummer visitorCommon30–38 cmRegularly Apr–Oct
Sooty ShearwaterArdenna griseaPassage migrantCommon40–51 cmRegularly Jul–Oct
Great ShearwaterArdenna gravisPassage migrantUncommon43–51 cmRegularly Aug–Sep
Balearic ShearwaterPuffinus mauretanicusScarceUncommon35–40 cmRegularly Sep
Smallest to largest
Length, cm- Manx Shearwater 30–38 cm
- Balearic Shearwater 35–40 cm
- Sooty Shearwater 40–51 cm
- Great Shearwater 43–51 cm
- Fulmar 45–50 cm
Body length, bill to tail. Rare birds in grey.
Data: EOD – eBird Observation Dataset (Cornell Lab of Ornithology), accessed via GBIF.org, CC BY 4.0. Records from 2019–2024, aggregated and filtered by Birdfact. How these lists are made